OBD-II code · Chassis
C0389 Transfer Case Low Range Switch Circuit Malfunction
The transfer case control module has detected an implausible state from the low range (4L) position switch. Engagement of low range may be inhibited.
Is it safe to drive with C0389?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLow range position switch failed
- PossibleShift actuator out of position
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Transfer Case Switch, Transfer Case Module, Shift Actuator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.